the questions of effects hydrogen bond of boiling point

Hydrogen bonding also influences the physical state of the substances (solid, liquid or gas). Illustration: Both oxygen and sulphur belong to same group but H 2 O is a liquid at ordinary temperature, while H 2 S is a gas. This is explaine..

(i) Volatility - All the hydrides are volatile. The volatility increases from H 2 O to H 2 S and then decreases. This is clear from their boiling points as given belo..

Nitriles are very weak bases. Although protonated nitrile (conjugate acid) is stabilized by resonance, its resonance structure is a vinyl cation, which is not very stable. Despite their feeble basic character, their protonation is important in their acid catalyzed reactions. Due to this week basic..

Physical Properties of Water - Pure water is transparent, tasteless, colourless and odourless. It readily picks up the flavour of any substance dissolved in it. Water in thick layers appears greenish blue. Due to the presence of intermolecular hydrogen bonding in H ..

Two carbon atoms joined by a single bond are capable of free rotation about themselves. When two carbon atoms are joined by a double bond, they cannot rotate freely and the relative positions of the various groups attached to these carbon atoms get fixed. This gives rise to geo..

1) Covalent compounds consist of molecules and not ions. The molecules do not have any electric charge on them. The molecules are held together by weak forces called Van der Waal's forces . 2) Covalent compounds are either gases, volatile liquids or soft solids. As there are weak, Van der..

Depending on the conditions for freezing of water, the solid form of water i.e., ice, can exist in different crystalline forms. In 'normal' hexagonal ice, four other oxygen atoms tetrahedrally surround each oxygen atom. One hydrogen atom lies in between each pair of oxygen atoms. Thus, e..

All organic compounds are made up of a progressively building chain of carbon atoms with a number of compounds having the same functional groups. Such a series of similarly constituted compounds are called a homologous series. Members of a homologous group are similar in structure and display simi..

The process of breaking higher hydrocarbons with high boiling points into a variety of lower hydrocarbons that are more volatile (low boiling), is called cracking (or pyrolysis). For example, a higher hydrocarbon C 1 0 H 2 2 splits acc..

Industrial - The chief source of free nitrogen is atmospheric air and nitrogen is usually prepared from it. Air free from dust, water vapour and carbon dioxide is compressed in a compression chamber for liquefaction. Firstly, the pressure on the air is increased to about 200 atmospheres. It is then..